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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIndustryMechanical Engineering IndustryBiel/BienneProtomec Sàrl
Protomec Sàrl Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Protomec Sàrl is precision mechanics subcontracting, i.e. precision mechanics manufacturing as a service provider for other companies. Specifically, this includes the production of precision products through turning, milling, grinding and assembly for various industries such as the watch industry, mechanical engineering industry and others.

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Products & services

Industry:Mechanical Engineering Industry
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Protomec Sàrl

Precision mechanical engineering (subcontracting)
Subcontracting of precision mechanical engineering for watchmaking, machine tools and industry, from raw material to surface treatments.
Turning
Manufacture of unique prototypes and series up to 200 parts, for diameters from 1 to 120 mm, in stainless steel, aluminium, steel, brass and technical plastics.
Milling
Machining of unique prototypes and series up to 300 parts, for maximum dimensions of 150x120x80 mm, in metals and technical plastics.
Grinding
Conventional grinding and flat surface grinding on both sides for unique prototypes and small series, with parts handling up to 50 mm in diameter.
Mounting & assembly
Production of high-precision mountings, assembly and mounting of subassemblies for measuring machines or systems composed of up to 50 parts.
CAD/CAM programming
CAD/CAM programming for the machining of complex parts, using a modern and high-performance system.
Polishing
Polishing of flat parts with the LAM PLAN Smartlam machine.
Surface treatments
Handling of surface treatments for parts, in particular anodizing, hardening and blackening.
Laser engraving
Laser marking for customizing parts and production tracking.
Trust & reputation

ranQ Trust Score of Protomec Sàrl: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Protomec Sàrl has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
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CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Protomec Sàrl scores 86.7 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.70.07%
Protomec Sàrl scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).83.322%
Protomec Sàrl scores 3.4 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.3.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Protomec Sàrl reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Fritz-Oppliger-Strasse 9
2504 Biel/Bienne

At a glance

Legal form
Limited Liability Company
UID
CHE-109.838.501
Founded
2002 · 24 years
Last commercial register change
February 5, 2020
Employees
11 to 20
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
88.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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